I have Windows 10 with xampp installed.
Let's assume I have a PHP script, containing
set_time_limit(0);
ignore_user_abort(true);
$counter = 0;
while($counter < 60){
file_put_contents('runtime_log.txt', $counter." \r\n", FILE_APPEND);
$counter++;
sleep(1);
}
I can close the browser window and the script will be still writing output to runtime_log.txt
If I wanted to check if it's running in the background on Linux, I would use
ps aux | grep php
How to do the same thing on Windows?
EDIT: I have simplified my question, because I can see that it's been misunderstood.
You can't get that information directly from the process list in Windows, because by default Apache is configured to load PHP as a module (a .DLL) so it will not be listed as a different process when it's running (unless PHP is configured to run as CGI, but nowadays that option is not used anymore).
I think that you can search for that using Process explorer, open it and then search (with the binoculars icon) for opened handles for runtime_log.txt, if the file is opened by PHP an open handle should appear for the httpd (Apache) process (this is method I use for finding the program that prevents me from deleting a file).
Note that you probably need to run Process Explorer elevated (as an administrator) since Apache is running as system service.
Don't put too much effort, just use the constant PHP_OS as also described here: How to get the OS on which PHP is running?
Related
I'm yet a newbie to PHP development, so far I used NetBeans for the job. Unfortunately NetBeans is not the best IDE, and it is unreasonably slow on my Mac.
I'd like to use Eclipse PDT for PHP, as I know and like Eclipse a lot better (I'm coming from Java).
But I cannot set up a server in Eclipse... All docs and topics just showed ppl saving files in the htdocs folder of an external server (such as MAMP or XAMPP). As I don't need a database, I just want to use PHP's built-in server instead of installing and running a heawyweight app in vain.
I'd like to reproduce the only really good thing in NetBeans: I just click on the Run button, and I see the result in the Browser immediately.
How do you set that up?
Even if I am a bit late to help you, I want to write down my solution, cause I've faced the same problem today.
I think the only chance is to start the php built-in webserver manually. Open a terminal in the desired root directory and start the webserver with
php -S localhost:8000
Then you can add a new server with Base URL: http://localhost:8000 and the choosen document root and you'll have the same functionality like in Netbeans.
Put together this hackety-hack-hack to make this work (even works with xdebug remote debugging if you set it up!!!).
UPDATE: one caveat with this solution is when you terminate the running CLI in Eclipse, it's terminating the wrapper script, not the php server directly. I've added some trapping and forawding of signals to child (php server) process. Works in OSX.
Overview:
I'm running Eclipse Neon
Need a router file in document root you wish to serve from (see this: http://php.net/manual/en/features.commandline.webserver.php)
Create a wrapper bash script to call PHP in server mode and pass in details
Set script to have executable permissions
Add this bash script as a PHP executable
For the project, create a run configuration as PHP CLI, using this new executable, passing the router file in.
Here's the bash script php5.6-server:
#!/bin/bash
_sigterm() {
echo "Caught SIGTERM signal!"
kill -2 "$child"
}
_sigint() {
echo "Caught SIGINT signal!"
kill -14 "$child"
}
if [ $1 = "-v" ]; then
#This is needed for when eclipse trys to detect php version
/path/to/php -v
else
trap _sigterm SIGTERM
trap _sigint SIGINT
# This is why your router file needs to be in the doc root
ROUTER=${#: -1}
DIR=$(dirname $ROUTER)
/path/to/php -S localhost:8000 -t $DIR $ROUTER
child=$!
wait "$child"
fi
Here's a simple router.php just to get it working:
<?php
// router.php
if (preg_match('/\.(?:png|jpg|jpeg|gif)$/', $_SERVER["REQUEST_URI"])) {
return false; // serve the requested resource as-is.
} else {
echo "<p>Welcome to PHP</p>";
}
Now in Eclipse go to Eclipse->Preferences->PHP->PHP Executables and add a new server:
And that should be it. Now create a PHP CLI Run configurations using the wrapper executable as 'Alternate PHP' and for the php file specify the route file:
Then Run as CLI!!! A PHP server should now be listening on port 8000 on your localhost. I suspect this method may also work for HHVM's Proxygen server.
I've installed Apache 2.4 with PHP 5.4 on Windows Server 2008 following instructions from this manual:
Apache installing manual.
Apache runs as a service now.
My application requires a php websocket script to run in the background. I'm running it manually with:
php myscript.php
The question is: Is there a way to start a background script automatically on system(apache) restart?
I found the following topic, but I didn't know where I could find an apache startup script for Windows.
Any help will be much appriciated.
I come up with a solution :)
Create an environment variable pointing to your Apache directory
APACHE_HOME = C:/PATH/TO_APACHE
Rename %APACHE_HOME%\bin\httpd.exe to %APACHE_HOME%\bin\httpdVendor.exe
Create a batch file and put the following code :
php myscript.php
%APACHE_HOME%\bin\httpdVendor.exe -k runservice
exit 0
Download/Install the free software BatToExeConverter (next, next, ...)
Open the installed converter and open your freshly created batch file
Click on the button Build EXE (let the default configuration)
Save the file : %APACHE_HOME%\bin\httpd.exe
Start your Apache Server
Tested on : Windows 7, Apache 2.4, Advanced Bat to Exe Converter 2.92
Use built in Windows Task Scheduler which triggers .bat script, which calls curl with defined url.
Download curl from http://curl.haxx.se/download.html and extract curl.exe on any directory, but we will use c:\backgroundtasks
Adjust script below to your needs:
cd c:\
cd c:\backgroundtasks
curl http://localhost/path/to/script.php
exit
Configure Task Scheduler to run as basic task:
General tab - as system account (to run when you are not logged in server)
Triggers tab - adjust frequency
Settings tab - at bottom set If the task is already running... to Stop the existing instance
The best method here would be to use Windows services dependencies.
Make a php-websocket-server.cmd file with any necessary environment settings (e.g. changing to a directory, setting PATH, etc...) with the last line:
php myscript.php
Install the Windows Server Resource Kit Tools, to get srvany and instsrv to create a user defined service. Note the install path as you'll need it in the next step.
Open a cmd shell and run:
<path_to_resource_kit>\instsrv PHPWebSocketServer <path_to_resource_kit>\srvany.exe
Next, create a file php-websocket-server.reg containing the following (update for your environment):
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\PHPWebSocketServer\Parameters]
"Application"="c:\\path\\to\\php-websocket-server.cmd"
Import it by double-clicking or regedit /s php-websocket-server.reg
Back in your cmd shell:
sc config Apache2.4 depend= PHPWebSocketServer
to make the Apache2.4* service depend on your php service. Now, when Apache is started, the php service will be brought up first. And likewise, if you stop the php service Apache will stop along with it.
*the howto indicates that the service is named "Apache2.4" but you may want to verify in your installation.
When running as service, you won't have the startup script.
Execute some service implementation that allows running other programs as services, and then make the new service (which is running your script) a dependency of the Apache service. However, this will not restart the script when apache restarts.
One possible solution using SrvStart, and another using ServiceEx.
Perhaps don't install Apache as a service, and then edit the startup/restart script, and use the above method to run Apache as service (instead of using Apache's own installer).
Create bat file,e eg 'myphp.bat' containing path/php myscript.php. Include the correct path to php if it's not path'd.
create a bat file, eg runmyphp.bat containing
AT 00:00 /every:M,T,W,Th,F "cmd /c /path/myphp.bat", again including the correct path.
Then use explorer to drag runmyphp into the startup folder, so it will always run on system startup.
Google 'windows at command' or 'windows cron' to get all the correct syntax for the 'at' command, but you can currently find a detailed explanation here.
I found another answer C:\wamp\scripts\wampserver.lib.php this file is run every time when your wamp starts
include your file path include_once("file_path"); to this file and its done . this is perfect solution which you want
Enjoy!!!!!!!!!
Although the solution of Halayem Anis is very creative, I think its important to note that you can never be sure that a PHP script keeps running in the background. So if you choose to start your script on "Apache start", then you probably end op resetting Apache quite often, simple to reboot your script.
I assume that's even how you came to this question, as on a normal server you never have to touch the Apache reset button. It starts on system start and then it just runs. If that was the case, you could simple run your php myscript.php command on start up.
Considering there is no way to make sure the script keeps running, I would use a different approach, where I check if it is running and if not, restart it.
So the first step is to make it possible to track if the script is running. I would go for the simple approach where your myscript.php writes a single byte to a file every 5seconds or so. This way I can use the last modified time on the file to see if it is still running, because last modified time + 5 seconds < now == not running.
You could also store the last access time in a database every 5 seconds or so. Might be slightly faster then accessing files if you have a lot of traffic.
The second part is to have each request check if the script is running. For this two work I would use the PHP.ini to prepend a php script on every request. You can do it with the auto_append_file option.
This prepend script would work like this:
<?php
$filename = 'checkonline.txt';
$cmd = "php myscript.php";
if (filemtime($filename)+5<time()) {
//run in background without freezing php
//based on code posted on PHP exec manual, linked below
if (substr(php_uname(), 0, 7) == "Windows"){
pclose(popen("start /B ". $cmd, "r"));
}
else {
exec($cmd . " > /dev/null &");
}
}
?>
Make sure to check how filemtime and exec work and what you need to keep in mind. They work slightly different on Windows/*nix.
Wrap-up all your required processes in a batch file and use RunAsService
With some tweaking, you can ensure that your service starts before Apache.
I work with PHP 5.4, IIS 7.5.
If execute a simple command, it works:
<?php
exec("dir", $r);
print_r($r);
?>
But if open .exe file, it doesn't work, the page is loading until the php timeout and doesn't open the notepad:
<?php
exec("notepad.exe", $r);
print_r($r);
?>
And if execute the notepad's php in command line, it works:
php -f <file>
I think that the problem is with IIS, but I don't know what. Thanks!
UPDATE
I did another test case and doesn't work, the page finishes loading but doesn't delete the task:
<?php
$r = exec("SCHTASKS.exe /Delete /TN TaskTest /F");
print_r($r);
?>
The IIS_IUSRS have permission for execute the schtasks.
SOLUTION
Notepad doesn't open because is a interactive program.
For Tasks scheduler, gives read and write permissions to the task folder (C:\Windows\System32\Tasks) to IUSR.
What makes you think it isn't working?
Be aware that windows services cannot normally interact with the desktop, so it may be the case that notepad is starting, just not anywhere you can see it - and as PHP will wait for it to terminate, and nobody can see it to terminate it, it'll timeout, as you're seeing.
It may also be the case that the user that the web server is running as does not have execute permissions on the folder that notepad is in (assuming it had the relevant path).
The problem is that you are instructing exec to gather and return the output of the spawned process and the process must terminate for this to happen. Since Notepad does not terminate immediately PHP is stuck waiting forever (you can test this by running any non-interactive process instead, for example net.exe).
Takeaway: exec and friends are not meant to launch interactive processes.
In any case, exec will spawn a command interpreter which in turn will spawn Notepad. However, due to security features introduced in recent Windows versions, and depending on the user that IIS is running as, these processes will not create visible windows on your current desktop so there will be nothing for you to see. You will be able to verify that they were spawned using Task Manager or another equivalent program.
We are running PHP on a Windows server (a source of many problems indeed, but migrating is not an option currently). There are a few points where a user-initiated action will need to kick off a few things that take a while and about which the user doesn't need to know if they succeed or fail, such as sending off an email or making sure some third-party accounts are updated. If I could just fork with pcntl_fork(), this would be very simple, but the PCNTL functions are not available in Windows.
It seems the closest I can get is to do something of this nature:
exec( 'php-cgi.exe somescript.php' );
However, this would be far more complicated. The actions I need to kick off rely on a lot of context that already will exist in the running process; to use the above example, I'd need to figure out the essential data and supply it to the new script in some way. If I could fork, it'd just be a matter of letting the parent process return early, leaving the child to work on a few more things.
I've found a few people talking about their own work in getting various PCNTL functions compiled on Windows, but none seemed to have anything available (broken links, etc).
Despite this question having practically the same name as mine, it seems the problem was more execution timeout than needing to fork. So, is my best option to just refactor a bit to deal with calling php-cgi, or are there other options?
Edit: It seems exec() won't work for this, at least not without me figuring some other aspect of it, as it waits until the call returns. I figured I could use START, sort of like exec( 'start php-cgi.exe somescript.php' );, but it still waits until the other script finishes.
how about installing psexec and use the -d (don't wait) option
exec('psexec -d php-cgi.exe somescript.php');
Get PSExec and run the command:
exec("psexec -d php-cgi.exe myfile.php");
PSTools are a good patch in, but I'll leave this here:
If your server runs windows 10 and it has the latest updates, you can install a Linux subsystem, which has its own Kernel that supports native forking.
This is supported by Microsoft officially.
Here's a good guide on how to do it.
Once you've installed the subsystem itself, you need to install php on the subsystem.
Your windows "c:\" drive can be found under "/mnt/c", so you can run your php from the subsystem, which supports forking (and by extension the subsystem's php can use pcntl_fork).
Example: php /mnt/c/xampp/htdocs/test.php
If you want to run the subsystem's php directly from a windows command line you can simply use the "wsl" command.
Assuming you're running this from under "C:\xampp\htdocs\"
Example: wsl php main.php
The "wsl" command will resolve the path for you, so you don't need to do any dark magic, if you call the command under c:\xampp\htdocs, the subsystem will resolve it as "/mnt/c/xampp/htdocs/".
If you're running your server as an apache server, you don't really need to do anything extra, just stop the windows apache server and start the linux one and you're done.
Obviously you'll need to install all the missing php modules that you need on the subsystem.
You can create a daemon/background process to run the code (e.g. sending emails) and the request would just have to add items to the queue, let the deamon do the heavy lifting.
For example, a file send_emails.bat:
cls
C:\PHP533\php.exe D:\web\server.php
exit
open windows task scheduler, and have the above send_emails.bat run every 30 minutes. Make sure only one instance runs at a time or you might run each task in multiples, or send each email twice. I say 30 minutes in case something breaks temporarily (memory issues, database unavailable, etc), it will re-start every 30 minutes rather than having a never ending process that just stops. The following is a skeleton daemon... not complete or tested I am just typing out an example:
<?php
set_time_limit(60*30); // don't run
$keepgoing = true;
$timeout = time()+ 60*29; // 29 minutes
while(time() < $timeout)
{
// grab emails from database
$result = $db->query('select subject, body, to_email FROM email_queue');
if($result->num_rows == 0)
{
sleep(10); // so we are not taxing the database
}
else
{
while($row = $result->fetch_assoc())
{
// send email
}
}
}
exit;
?>
Finally you just need the request to add the item to the queue in a database, and let the daemon handle the heavy lifting.
$db->query('insert into email_queue(to,subject,body) values ('customer#email.com','important email','<b>html body!</b>');
I have installed PHP as a module in IIS on Windows Server 2008, am am having great difficulty trying to execute command-line programs from within a PHP script.
I can execute the PHP code fine using php-cgi.exe and php-cli.exe, which leads me to believe that it might be a permissions issue.
However, I can execute some commands, like shutdown.exe and dir.
I have tried the same process in an ASP.NET file and am having exactly the same problem.
Basically, I would like to do this:
exec("path-to-exe-file");
And actually have it work.
Try
exec('path-to-exe-file 2>&1', $output);
var_dump($output);
The 2>&1 part should redirect error messages to stdout (on win32, too) which therefore should show up in $output.
I spent several hours before realising what was wrong...
Use IIS Manager, Application Pools, select the pool associated to your application and make sure that:
ProcessModel.Identity = LocalSystem
and
ProcessModel.Load User Profile = true